'\" t
.\"     Title: SPI_getbinval
.\"    Author: The PostgreSQL Global Development Group
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: 2021
.\"    Manual: PostgreSQL 13.3 Documentation
.\"    Source: PostgreSQL 13.3
.\"  Language: English
.\"
.TH "SPI_GETBINVAL" "3" "2021" "PostgreSQL 13.3" "PostgreSQL 13.3 Documentation"
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.SH "NAME"
SPI_getbinval \- return the binary value of the specified column
.SH "SYNOPSIS"
.sp
.nf
Datum SPI_getbinval(HeapTuple \fIrow\fR, TupleDesc \fIrowdesc\fR, int \fIcolnumber\fR,
                    bool * \fIisnull\fR)
.fi
.SH "DESCRIPTION"
.PP
\fBSPI_getbinval\fR
returns the value of the specified column in the internal form (as type
Datum)\&.
.PP
This function does not allocate new space for the datum\&. In the case of a pass\-by\-reference data type, the return value will be a pointer into the passed row\&.
.SH "ARGUMENTS"
.PP
HeapTuple \fIrow\fR
.RS 4
input row to be examined
.RE
.PP
TupleDesc \fIrowdesc\fR
.RS 4
input row description
.RE
.PP
int \fIcolnumber\fR
.RS 4
column number (count starts at 1)
.RE
.PP
bool * \fIisnull\fR
.RS 4
flag for a null value in the column
.RE
.SH "RETURN VALUE"
.PP
The binary value of the column is returned\&. The variable pointed to by
\fIisnull\fR
is set to true if the column is null, else to false\&.
.PP
\fISPI_result\fR
is set to
SPI_ERROR_NOATTRIBUTE
on error\&.
